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Warmer still: Extreme climate predictions appear most accurate, study says

Climate Change

Climate scientists agree the Earth will be hotter by the end of the century, but their simulations don’t agree on how much. Now a new study suggests the gloomier predictions may be closer to the mark.

 

Polar bears interbred with brown bears until 160,000 years ago as Earth's climate warmed and cooled, claims DNA study

Polar bears first appeared 4-5 million years ago - but the animals have interbred with brown bears as Earth has warmed and cooled, say Penn State researchers.

 

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